
        /* ========== 基础样式 ========== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', system-ui, sans-serif;
        }

        body {
            background: #f0f2f5;
            line-height: 1.6;
            color: #333;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ========== 布局容器 ========== */
        .container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1rem;
            flex: 1;
        }

        .header {
            text-align: center;
            margin-bottom: 2rem;
        }

        /* ========== 搜索框 ========== */
        .search-box {
            width: 100%;
            max-width: 400px;
            margin: 1rem auto;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 25px;
            font-size: 1rem;
        }

        /* ========== 资源卡片 ========== */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
            padding: 1rem;
        }

        .resource-card {
            background: white;
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            transition: transform 0.2s;
        }

        .resource-card:hover {
            transform: translateY(-3px);
        }

        .resource-title {
            color: #1a73e8;
            margin-bottom: 0.5rem;
            font-size: 1.2rem;
        }

        .resource-description {
            color: #666;
            font-size: 0.95rem;
            margin-bottom: 1rem;
        }

        /* ========== 下载链接 ========== */
        .link-box {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background: #f8f9fa;
            padding: 0.5rem;
            border-radius: 6px;
        }

        .hidden-link {
            flex: 1;
            color: #1a73e8;
            text-decoration: underline;
            cursor: pointer;
            padding: 0.3rem;
            word-break: break-all;
            background: transparent;
            border: none;
            text-align: left;
        }

        .copy-btn {
            background: #1a73e8;
            color: white;
            border: none;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            cursor: pointer;
            transition: opacity 0.2s;
            flex-shrink: 0;
        }

        .copy-btn.copied {
            background: #34a853;
        }

        /* ========== 反馈系统 ========== */
        .feedback-btn {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #1a73e8;
            color: white;
            padding: 12px 20px;
            border-radius: 30px;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
            z-index: 1000;
            transition: transform 0.3s;
        }

        .feedback-btn:hover {
            transform: scale(1.05);
        }

        .feedback-modal {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.15);
            z-index: 1002;
            display: none;
        }

        .qrcode-title {
            color: #1a73e8;
            margin-bottom: 15px;
            font-size: 1.2rem;
            text-align: center;
        }

        .qrcode-image {
            width: 200px;
            height: 200px;
            margin: 0 auto 15px;
            border: 2px solid #eee;
            border-radius: 8px;
            padding: 10px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .qrcode-text {
            color: #666;
            font-size: 0.9rem;
            text-align: center;
        }

        /* ========== 激活码系统 ========== */
        .auth-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            z-index: 1001;
            display: none;
        }

        .auth-modal {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.2);
            z-index: 1003;
            width: 90%;
            max-width: 400px;
            display: none;
        }

        .auth-header {
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            color: #1a73e8;
            text-align: center;
        }

        .auth-input {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
        }

        .auth-buttons {
            display: flex;
            gap: 1rem;
            margin-top: 1rem;
        }

        .auth-btn {
            flex: 1;
            padding: 0.8rem;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            transition: opacity 0.2s;
        }

        .auth-confirm {
            background: #1a73e8;
            color: white;
        }

        .auth-cancel {
            background: #f0f2f5;
            color: #666;
        }

        /* ========== 法律声明 ========== */
        .legal-notice {
            text-align: center;
            padding: 1.5rem;
            background: #f8f9fa;
            margin-top: 3rem;
            border-top: 1px solid #eee;
        }

        .legal-notice p {
            font-size: 0.9rem;
            color: #666;
            line-height: 1.8;
            max-width: 800px;
            margin: 0 auto;
        }

        .copyright {
            text-align: center;
            padding: 1rem;
            background: #1a73e8;
            color: white;
            font-size: 0.9rem;
        }

        /* ========== 移动端适配 ========== */
        @media (max-width: 768px) {
            .container {
                margin: 1rem auto;
            }
            
            .resource-grid {
                grid-template-columns: 1fr;
            }

            .qrcode-image {
                width: 150px;
                height: 150px;
            }

            .feedback-modal {
                width: 90%;
                padding: 1rem;
            }
        }
